Răspuns:
4:
a He must be hungry because of how much food he has bought.
b She must have cried because she has bloodshot eyes.
c They must still be at work because the lights are off.
d She must certainly be rich because she keeps changing her mobile phones, although they are expensive.
e The problem must be difficult because he has been working on it for hours.
f They must be Chinese because they are eating with chopsticks.
g They must have liked the film because it was interesting.
h Something must have happened to her because she didn't come to the party.
5:
a - 2
b - 3
c - 9
d - 4
e - 10
f - 1
g - 5
h - 8
i - 7
j - 6
